Target-drift seismic-force-based design of one-story reinforced concrete precast buildings considering the requirements of the second generation of the Eurocode 8 standard

Isaković, Tatjana (author)

Results are presented concerning the force-based design of a wide range of reinforced concrete, single-story precast buildings, considering the requirements of the new Eurocode 8 standard. The relevant criterion defining the cross-sectional dimensions of the columns was the 2% drift limitation. Buildings were designed considering a behavior factor of 3 and a 50% reduction in stiffness corresponding to the gross cross-section. The design evaluation, using a nonlinear pushover analysis, revealed that all the buildings could expect approximately twice the drift considered in the design with significant second-order effects, particularly in very tall columns. The main reasons for large discrepancies between the elastic and nonlinear analyses were the arbitrarily selected behavior factor and the arbitrarily selected reduction in stiffness corresponding to the gross cross-section (the stiffness considered in the design was approximately double what the nonlinear analysis revealed). The analysis revealed that these two quantities are closely correlated. Once the dimensions of the columns had been selected, the force and initial stiffness reduction could not be chosen arbitrarily. Correlations were determined between the column dimensions, theoretical stiffness reduction, seismic force reduction (behavior factor) and second-order effects. From these correlations, a new target-drift force-based design methodology was proposed. All considered buildings were redesigned using the proposed method. The results of the new design and the nonlinear-pushover-based analysis correlated well.

• Language: English
• Keywords: force-based design, new Eurocode 8, nonlinear analysis, RC precast buildings, target-drift design, civil engineering
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: Str. 319–345
• Numbering: Vol. 54, iss. 1
• PID: 20.500.12556/RUL-165621
• UDC: 624.04
• ISSN on article: 1096-9845
• DOI: 10.1002/eqe.4260
• COBISS.SI-ID: 212722435
• Publication date in RUL: 10.12.2024

Record is a part of a journal

• Title: Earthquake engineering and structural dynamics
• Shortened title: Earthquake eng. struct. dyn.
• Publisher: Wiley, International Association for Earthquake Engineering
• ISSN: 1096-9845
• COBISS.SI-ID: 512816153

Licences

• License: CC BY-NC 4.0, Creative Commons Attribution-NonCommercial 4.0 International
• Link: http://creativecommons.org/licenses/by-nc/4.0/
• Description: A creative commons license that bans commercial use, but the users don’t have to license their derivative works on the same terms.

Secondary language

• Language: Slovenian
• Keywords: gradbeništvo, projektiranje po metodi sil, novi Evrokod 8, nelinearna analiza, AB montažne konstrukcije, projektiranje glede na ciljni pomik

Projects

• Funder: ARIS - Slovenian Research and Innovation Agency
• Project number: P2-0185
• Name: Potresno inženirstvo